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BLE协议—广播和扫描 - 创客硬件开发 - 清泛IT社区,为创新赋能!
...数设置成一样。
之所以要这么设计,是为了防止在批量测试或者使用设备时,由于多个设备的同时广播,而形成数据风暴,防止设备之间的干扰。
扫描扫描类别主动扫描:设备主动扫描来获取更多对端设备的信息上报Host,为...
What is the difference between angular-route and angular-ui-router?
I'm planning to use AngularJS in my big applications. So I'm in the process to find out the right modules to use.
15 Answ...
difference between primary key and unique key
I'm using mysql database. I have a confusion between primary key and unique key.
15 Answers
...
How do I get python's pprint to return a string instead of printing?
... documentation:
Return the formatted representation of object as a string. indent,
width and depth will be passed to the PrettyPrinter constructor as
formatting parameters.
Example:
>>> import pprint
>>> people = [
... {"first": "Brian", "last": "Kernighan"},
... ...
How to parse Excel (XLS) file in Javascript/HTML5
...ject_array(workbook.Sheets[sheetName]);
var json_object = JSON.stringify(XL_row_object);
console.log(json_object);
})
};
reader.onerror = function(ex) {
console.log(ex);
};
reader.readAsBinaryString(file);
};
};
</script>
Below post has the c...
Chrome, Javascript, window.open in new tab
... this, because it's an option controlled by Internet Explorer users.
Opening pages using Window.open with a different window name will open in a new browser window like a popup, OR open in a new tab, if the user configured the browser to do so.
EDIT:
A more detailed explanation:
1. In modern bro...
What is the difference between concurrent programming and parallel programming?
What is the difference between concurrent programming and parallel programing? I asked google but didn't find anything that helped me to understand that difference. Could you give me an example for both?
...
How to track child process using strace?
...a process briefly. The process created 90 threads. When I found the offending thread, I had to tediously search for the parent thread, then the grandparent thread, and so on all the way to the root process.
...
推荐系统算法初探 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...性用户更倾向于购买护肤品,这就叫交叉属性。通过反复测试和经验,我们可以调整特征属性的组合,拟合出最准确的回归函数。最后得出的属性权重如下:
基于模型的算法由于快速、准确,适用于实时性比较高的业务如新...
How to move the cursor word by word in the OS X Terminal
I know the combination Ctrl + A to jump to the beginning of the current command, and Ctrl + E to jump to the end.
17 A...
